xnikolaos

Νo. No need for a speed reducer when using a 45-50mm small pulley servo motor (photos). You can manually operate the sewing machine (Hand crank) if you want an even lower speed. I will make a reducer for my pleasure (photos), from cheap Chinese materials, but it is not necessary. I can punch 5mm, chrom tanned leather at lowest speed (100-200Rpm) with easy, with 750watt chinese noname servomotor.

From my experience. It is better if you go with this address (photo) and through AliExpress,. Delivery from Germany to SLOVENIA with DHL and without taxes and delivery costs.

20,00€ Shipping Fees for SLOVENIA.

Some Chinese companies, such as VEVOR, sell their product through European deposits. This means that the taxes have already been paid in the EU. As for the quality of the servos, in my opinion it is good but by no means comparable in quality to a good name brand European or American product. But as I searched I couldn't find a European servo motor manufacturer with reasonable prices for my pocket. Those who sell, that is, the sewing machine sellers, follow the same process as me. That is, they find a Chinese product, of dubious quality but cheap and sell it to customers at a low price with the guarantee of the store and not of the manufacturing company. I'm a hobbyist looking to find an inexpensive motor to play with and have fun with. If I were a professional I would have to allocate thousands of euros to meet my needs in a reliable product.

I'm a bit of a latecomer but I'll share my experience. I have bought three 750watt servomotors from AliExpress, duty free, and I was pleased. Company VEVOR on alliexpress. It has two pulleys 45mm and 70mm and an automatic needle positioner. You need someone with basic DIY knowledge to install. 120€. I live in Greece.

I use 2-3oz maximum (0,7-1,2mm) cow Chrome tanned leather for shoe uppers ( a bit hard) or napa leather (very soft), same thickness. Both have enough elasticity and needle (double hole) strength for this type of work. Professionals like wood feeling. I'm an amateur from Greece.

Goat leather, in Europe, is very soft and pliable and it's used almost for shoe linings. It can be found between 0,4mm to 1,2mm (1,6oz to 3oz) and majority of shoes manufactures use 0,7mm. They don't skive it. It's so soft that a little pressure reduce in half it's thickness. I think a belt sander can help you. I'm not a leather professional.

Stunning leather construction. Simple and beautiful. Bravo.